I did this for a while but have moved on to

    git commit --fixup HEAD

and you can tack an -e on the end to add more notes in the commit message body. You can fixup prior commits by supplying their short hash, which is how I originally discovered this: I essentially wanted to amend a commit farther back in my branch.

This makes a commit with a “fixup!” prefix that works with

    git rebase --interactive --autosquash

you can also form that kind of commit directly, and there is also a “squash!” directive. Now you don’t have to force push amended commits. And it helps sometimes when you accidentally amend something you didn’t mean to–now you can just soft reset to HEAD~1 and try again.

I don’t even bother locally rebasing to autosquash it all anymore since we use squash-to-merge/rebase in github PRs now.